# Machine Learning: MCQs Set – 04

#### Q31: Supervised learning differs from unsupervised clustering. Supervised learning requires

• (A) At least one input attribute
• (B) Input attributes to be categorical
• (C) At least one output attribute
• (D) Output attributes to be categorical

#### Q32: Which data is used to tune the parameters of supervised learning model

• (A) training
• (B) test
• (C) verification
• (D) validation

#### Q33: For two real-valued attributes, the correlation coefficient is 0.85. What does this value indicate?

• (A) The attributes are not linearly related
• (B) As the value of one attribute increases the value of the second attribute also increases
• (C) As the value of one attribute decreases the value of the second attribute increases
• (D) The attributes show a curvilinear relationship

#### Q34: Which of the following is not TRUE for regression?

• (A) It relates inputs to outputs
• (B) It is used for prediction
• (C) It may be used for interpretation
• (D) It discovers causal relationships

#### Q35: Assume you’re given three variables: X, Y, and Z. C1, C2, and C3 are the Pearson correlation coefficients for (X, Y), (Y, Z), and (X, Z), respectively. You have now added 2 to all X values (i.e. new values are X+2), removed 2 from all Y values (i.e. new values are Y-2) and Z remains the same. D1, D2, and D3 are the new coefficients for (X,Y), (Y,Z), and (X,Z). How do the values of D1, D2, and D3 relate to the values of C1, C2, and C3?

• (A) D1= C1, D2 < C2, D3 > C3
• (B) D1 = C1, D2 > C2, D3 > C3
• (C) D1 = C1, D2 > C2, D3 < C3
• (D) D1 = C1, D2 = C2, D3 = C3

#### Q36: Which neural network architecture would be most suited to handle an image identification problem (recognizing a dog in a photo)?

• (A) Multi Layer Perceptron
• (B) Convolutional Neural Network
• (C) Recurrent Neural network
• (D) Perceptron

• (A) 2
• (B) n
• (C) 3
• (D) n+1

• (A) TRUE
• (B) FALSE

• (A) 1/36
• (B) 1/18
• (C) 5/36
• (D) 1/6

#### Q40: Some test results are normally distributed, with a mean of 18 and a standard deviation of 6. What percentage of test takers scored between 18 and 24?

• (A) 20%
• (B) 22%
• (C) 34%
• (D) None of the above